Degradation of wastewater from terephthalic acid manufacturing process by ozonation catalyzed with Fe2+, H2O2 and UV light: Direct versus indirect ozonation reactions

Pillai, K. Chandraselcara; Kwon, Tae Ouk; Moon, Ilkyeong

doi:10.1016/j.apcatb.2009.05.040

Cited by 105 publications

(17 citation statements)

References 38 publications

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“…In real (e.g., multi-componential) waters, a large fraction of zOH radicals (which are much less selective and much more reactive than ozone) are scavenged by the water matrix therefore, most likely the principle pathway of oxidation is direct reaction of ozone with the contaminant (von Gunten, 2003). (Delanoe et al, 2001;Tong et al, 2003;Skoumal et al, 2006;Yunrui et al, 2007;Rosal et al, 2008;Chandrasekara Pillai et al, 2009;Faria et al, 2009;Rosal et al, 2009). Therefore the pH of the reaction is the crucial parameter to be considered during ozonation in order to select the reaction pathway (radical/non-radical) (Huber et al, 2003).…”

Section: Catalytic Ozonation Of Micropollutantsmentioning

confidence: 99%

“…Thus, the COD removal was significant for the 'two-step addition' approach throughout the treatment and reached 0.38 and 0.10 (62% and 90% degradation efficiency) at 120 and 240 min., respectively, in comparison to 0.55 and 0.27 (45% and 73% degradation efficiency) for the 'onestep addition' method (Chandrasekara Pillai et al, 2009). During such an unusual treatment, H 2 O 2 and Fe 2þ were added in a 'one-step addition' or using a 'two-step addition' with an initial amendment of 100 mM H 2 O 2 , and after 60 min., 100 mM H 2 O 2 and 0.50 mM of Fe 2þ for up to 240 min.…”

Section: Catalytic Ozonation Of Micropollutantsmentioning

confidence: 99%

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Treatment of Micropollutants in Water and Wastewater

Virkutytė

Varma

2010

wio

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The Integrated Environmental Technology Series addresses key themes and issues in the field of environmental technology from a multidisciplinary and integrated perspective.An integrated approach is potentially the most viable solution to the major pollution issues that face the globe in the 21st century.World experts are brought together to contribute to each volume, presenting a comprehensive blend of fundamental principles and applied technologies for each topic. Current practices and the state-of-the-art are reviewed, new developments in analytics, science and biotechnology are presented and, crucially, the theme of each volume is presented in relation to adjacent scientific, social and economic fields to provide solutions from a truly integrated perspective.The Integrated Environmental Technology Series will form an invaluable and definitive resource in this rapidly evolving discipline.

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Section: Catalytic Ozonation Of Micropollutantsmentioning

confidence: 99%

Section: Catalytic Ozonation Of Micropollutantsmentioning

confidence: 99%

Treatment of Micropollutants in Water and Wastewater

Virkutytė

Varma

2010

wio

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“…57,58 The method is based on the induced fluorescence due to the formation of hydroxy-substituted TA. However, possible degradation of TA by plasma species (e.g., combination of O 3 , • OH, H 2 O 2 and UV photons 59 ) is usually not taken into account.…”

Section: Application Modementioning

confidence: 99%

Analysis of Short-Lived Reactive Species in Plasma–Air–Water Systems: The Dos and the Do Nots

2018

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This Feature addresses the analysis of the reactive species generated by nonthermal atmospheric pressure plasmas, which are widely employed in industrial and biomedical research, as well as first clinical applications. We summarize the progress in detection of plasma-generated short-lived reactive oxygen and nitrogen species in aqueous solutions, discuss the potential and limitations of various analytical methods in plasma−liquid systems, and provide an outlook on the possible future research goals in development of short-lived reactive species analysis methods for a general nonspecialist audience.

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“…Ozonation offers an effective treatment approach due to the high oxidation potential of 2.08 V [46] for the degradation of pollutants like dyes [47]and pesticides [48]. The combination of HC and ozone can be effective as under the cavitational effect, the ozone gets easily dissociated into molecular O 2 and nascent oxygen (O) which form hydroxyl radicals due to reaction with water [30].…”

Section: Combination Of Hc With Omentioning

confidence: 99%

Application of Hydrodynamic Cavitation Reactors for Treatment of Wastewater Containing Organic Pollutants: Intensification Using Hybrid Approaches

Thanekar

Gogate

2018

Fluids

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The concentration of hazardous pollutants in the wastewater streams has to keep below a certain level in order to comply with the stringent environmental laws. The conventional technologies for wastewater treatment have drawbacks in terms of limited applicability and efficiency. Utilization of hydrodynamic cavitation (HC) reactors for the degradation of pollutants at large scale has shown considerable promise over last few years, due to higher energy efficiencies and low cost operation based on lower consumption of chemicals for the treatment. The present work overviews the degradation of different pollutants, such as pharmaceuticals, pesticide, phenolic derivatives and dyes, as well as the treatment of real industrial effluents using hybrid methods based on HC viz. HC/H2O2, HC/Ozone, HC/Fenton, HC/Ultraviolet irradiations (UV), and HC coupled with biological oxidation. Furthermore, based on the literature reports, recommendations for the selection of optimum operating parameters, such as inlet pressure, solution temperature, initial pH and initial pollutant concentration have been discussed in order to maximize the process intensification benefits. Moreover, hybrid methods based on HC has been demonstrated to show good synergism as compared to individual treatment approach. Overall, high energy efficient wastewater treatment can be achieved using a combined treatment approach based on HC under optimized conditions.

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Degradation of wastewater from terephthalic acid manufacturing process by ozonation catalyzed with Fe2+, H2O2 and UV light: Direct versus indirect ozonation reactions

Cited by 105 publications

References 38 publications

Treatment of Micropollutants in Water and Wastewater

Treatment of Micropollutants in Water and Wastewater

Analysis of Short-Lived Reactive Species in Plasma–Air–Water Systems: The Dos and the Do Nots

Application of Hydrodynamic Cavitation Reactors for Treatment of Wastewater Containing Organic Pollutants: Intensification Using Hybrid Approaches

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